Science and Technology
- In mathematics, the term even is used in several senses related to odd:
- even and odd numbers, an integer is even if dividing by two yields an integer
- even and odd functions, a function is even if for all x
- even and odd permutations, a permutation of a finite set is even if it is composed of an even number of transpositions
- Singly even number, an integer divisible by 2 but not divisible by 4
- Even code, if the Hamming weight of all of a binary code's codewords is even
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